<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8" />
  <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta name="theme-color" content="#000000" />
  <script type="text/javascript" src="recorder.js"> </script>
  <meta name="description" content="Web site created using create-react-app" />
  <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
  <!--
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
    -->
  <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
  <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
  <title>React App</title>
</head>

<body>
  <noscript>You need to enable JavaScript to run this app.</noscript>
  <div id="root"></div>
  <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
</body>
<script>
  var webkitAudioContext = AudioContext || webkitAudioContext;
  var onFail = function (e) {
    console.log('Rejected!', e);
  };

  var onSuccess = function (s) {
    var context = new webkitAudioContext();
    var mediaStreamSource = context.createMediaStreamSource(s);
    recorder = new Recorder(mediaStreamSource);
    recorder.record();

    // audio loopback
    // mediaStreamSource.connect(context.destination);
  }

  window.URL = window.URL || window.webkitURL;
  navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia ||
    navigator.msGetUserMedia;

  var recorder;
  var audio = document.querySelector('audio');

  function startRecording() {
    if (navigator.getUserMedia) {
      navigator.getUserMedia({
        audio: true
      }, onSuccess, onFail);
    } else {
      console.log('navigator.getUserMedia not present');
    }
  }

  function stopRecording() {
    return new Promise(resolve => {
      if (!recorder) {
        resolve();
        return;
      }
      recorder.stop();
      recorder.exportWAV(function (s) {
        // audio.src = window.URL.createObjectURL(s);
        const form = new FormData();
        form.append('blob', s, 'record.wav');
        fetch('https://miner.picp.net/recognize/audio', {
          method: 'POST',
          body: form
        }).then(resp => resp.json()).then(res => resolve(res)).catch(e => resolve(e));
      });
    })
  }
</script>

</html>